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1. Which of the following changes has a decrease in entropy?
N2O4 (g) ______ 2NO2 (g)
C2H5OH (l) + 3 O2 (g) _____ 2CO2 (g) + 3H2O (g)
3O2 (g) + 2KCL) (s) _____ 2 KClO3 (s)
H2O (l) _____ H2O (g)
2. Which of the following processes involves an increase in entropy?
a) condensing water vapor
b) melting gold bars
c) filtering grounds from coffee
d) freezing popsicles
3. Describe in detail what you know about the enthalpy, entropy, and free energy changes when a sample of gas condenses to a liquid. How does temperature affect these changes?
a sulfuric acid solution containing 571.6 g of h2so4 per liter of solution has a density of 1.329 ggtcm3. calculate a
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Hydrogen gas a potential future fuel, can be formed by the reaction of methane with water as per to the balanced equation
During the initial stages of method development, the researcher was unable to separate anthracene and naphthalene with baseline resolution. From the options below, select all possible modifications the researcher could make to improve the resoluti..
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25 lbs of propane are held in a sealed container at 350 psia. The volume of the container is 3 ft3. Calculate the weight and volumes of the two phases in the container.
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What is the overall mass-transfer coefficient for oxygen (O2) from the atmosphere to the river? (b)Which part of the transfer mechanism controls the overall rate
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The river has an ultimate CBOD of 10 mg/L as well as is flowing at a rate of 8 m3/s. Presumptuous a reaction-rate coefficient of 0.1/day, compute the ultimate and 5-day CBOD of the waste at the point of discharge (0 km) and 20 km downstream. The r..
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